Problem with j337u can't make call, shows error: Call not sent - GSM-Forum

CyberGhostX · 03-19-2019, 19:24

Hi, i have a j337u and when i try to make a call only shows an error saying "Call not sent" even when it shows carrier name on the notification bar and full signal bars.

Any help?

Thanks

donsam · 06-12-2019, 16:07

Found a way to get phone working. Factory Reset phone. when it loads setup, go through setup but don't connect to wifi. Enable usb debugging. KnoxGuard Unlock. Then connect to internet. App should be disabled.

This should Work.

CyberGhostX · 06-12-2019, 18:55

Hi, do you know how to do a KnoxGuard Unlock to this phone? Regards

donsam · 06-13-2019, 14:47

I used Chimera to perform the Knoxguard unlock.

Eng Katumba · 02-07-2021, 14:37

j737u security policy cannot allow use mobile data any solution ?

03-19-2019, 19:24	#1 (permalink)
CyberGhostX Junior Member Join Date: Aug 2013 Posts: 27 Member: 1994696 Status: Offline Thanks Meter: 5	Problem with j337u can't make call, shows error: Call not sent Hi, i have a j337u and when i try to make a call only shows an error saying "Call not sent" even when it shows carrier name on the notification bar and full signal bars. Any help? Thanks

06-12-2019, 16:07	#2 (permalink)
donsam Junior Member Join Date: Mar 2007 Posts: 36 Member: 468602 Status: Offline Thanks Meter: 2	Found a way to get phone working. Factory Reset phone. when it loads setup, go through setup but don't connect to wifi. Enable usb debugging. KnoxGuard Unlock. Then connect to internet. App should be disabled. This should Work.

06-12-2019, 18:55	#3 (permalink)
CyberGhostX Junior Member Join Date: Aug 2013 Posts: 27 Member: 1994696 Status: Offline Thanks Meter: 5	Hi, do you know how to do a KnoxGuard Unlock to this phone? Regards

06-13-2019, 14:47	#4 (permalink)
donsam Junior Member Join Date: Mar 2007 Posts: 36 Member: 468602 Status: Offline Thanks Meter: 2	I used Chimera to perform the Knoxguard unlock.

02-07-2021, 14:37	#5 (permalink)
Eng Katumba Major Poster Join Date: Feb 2015 Location: In KIgali currently Posts: 42 Member: 2349214 Status: Offline Thanks Meter: 8	j737u security policy cannot allow use mobile data any solution ?